1. First, you need an upgraded version of Python. I used version 2.7. For Centos, since I didn’t want to break yum, I installed it alongside my existing python install. I download and extracted my new Python package, proceeded to cd into the extracted directory and ran:
-make
-make altinstall (this keeps it from trashing the version of Python you’ll need for YUM)

3. In the publicnginx directory, I edited the following three files: createvhosts.py, nginxinstaller and nginxinstaller2. I changed the first line from #!/usr/bin/env python to #!/usr/bin/env python2.7

After that, I ran ./nginxinstaller install and the install completed sucessfully.